Cross-site scripting in Ruby on Rails - CVE-2015-7580
Published: January 26, 2016 / Updated: September 22, 2017
Vulnerability identifier: #VU8583
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2015-7580
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
Vulnerability allows a remote attacker to perform XSS attacks.
The vulnerability is caused by an input validation error in lib/rails/html/scrubbers.rb in the rails-html-sanitizer gem before 1.0.3 for Ruby on Rails 4.2.x and 5.x. A remote authenticated attacker can trick the victim to follow a specially specially crafted link and execute arbitrary HTML and script code in victim's browser in security context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
Affected software
Ruby on Rails
Fedora
rubygem-rails-html-sanitizer
Fedora
rubygem-rails-html-sanitizer
How to mitigate CVE-2015-7580
Update to version 4.2.5.1.
rubygem-rails-html-sanitizer - addressed in versions 1.0.1-2.fc22, 1.0.3-1.fc23